303 Stainless Steel Bar

Primary Elements: The machineable nature of grade 303 is due to the presence of Sulphur in the steel composition. Whilst the Sulphur improves machining, it also causes a decrease in the corrosion resistance and a slight lowering of the toughness. The corrosion resistance of type 303 is lower than that for 304. The toughness is still excellent as with other austenitic grades

Features: Stainless steel type 1.4305 is popularly known as grade 303 stainless steel. Grade 303 is the most readily machineable of all the austenitic grades of stainless steel.

Grade 303 stainless steel has excellent machinability. Machining can be enhanced by adhering to the following rules:

• Cutting edges must be kept sharp. Dull edges cause excess work hardening.
• Cuts should be light but deep enough to prevent work hardening by riding on the surface of the material.
• Chip breakers should be employed to assist in ensuring swarf remains clear of the work
• Low thermal conductivity of austenitic alloys results in heat concentrating at the cutting edges. This means coolants and lubricants are necessary and must be used in large quantities.

Bar Types Available:

• square bar
• hexagon bar
• round bar

Stock Sizes: Stock Sizes: Range from 1/2" - 14 " in diameter Custom sizes available upon request.

Products constructed of Stainless Steel 303
(completely or partially)

Grade 303 is used in applications that require parts to be heavily machined. These applications include:

• Nuts and bolts
• Screws
• Gears
• Aircraft fittings
• Bushings
• Shafts

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